think of like that prototype game, all I remember is one of the finishers were he grabs the enemy and pushes off with with some long flesh attached to them, sling shots himself in the air and comes around with his blade to kill them

Only if you have the option to shank them in the anus. Also, it'd probably get boring at the 3rd or 4th titan unless they vary them up a lot, which wouldn't be true to the anime and piss a lot of people off. So, it's either going to cause a lot of rage or be a mediocre game.

If they were to make a game about attack on titan, they should either make you a character who was never mentioned in the anime/manga and he builds himself up in the ranks, combat should be realistic with you being able to run out of gas for your maneuver gear but are able to scavenge parts and upgrade your gear, can sneak through buildings to avoid titans, titans should be hard to fight, you should be able to propel yourself from the walls or titans backs, etc

idk might be a shit game or mediocre.... and also they should be able to stab them in the anus